Hybrid tea rose plant named ‘KORcarmsis’

ABSTRACT

A new and distinct variety of hybrid tea rose plant, referred to by its cultivar name, ‘KORcarmsis’, is described. The new variety forms in abundance on a substantially continuous basis attractive, cup like reddish-purple colored blossoms. The vegetation is vigorous, and the growth habit is very bushy and upright. Attractive semi-glossy, dark green foliage is formed. Additionally, the new variety is particularly well suited for growing as distinctive ornamentation in the landscape.

Latin name of genus and species of plant claimed: Rosa hybrida.

Variety denomination: ‘KORcarmsis’.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Plant Breeders' Right ApplicationNumber 2019/2438, which was filed at Community Plant Variety Office inthe European Union on Sep. 25, 2019, the contents of which are herebyincorporated by reference for all purposes.

BACKGROUND OF THE INVENTION

The new variety of hybrid tea rose plant of the present invention wascreated by controlled breeding in May 2008 in Sparrishoop, Germany byartificial pollination wherein two parents were crossed which previouslyhad been studied in the hope that they would contribute the desiredcharacteristics. The female parent (i.e., the seed parent) was anunnamed seedling (non-patented). The male parent (i.e., the pollenparent) of the new variety was a seedling from a cross of ‘Macgenev’(U.S. Plant Pat. No. 8,279) x unnamed seedling' (non-patented in theUnited States).

The parentage of the new variety can be summarized as follows:unnamed seedling x (‘Macgenev’ x unnamed seedling)

The seeds resulting from the above pollination were sown and smallplants were obtained which were physically and biologically differentfrom each other. Selective study resulted in the identification of asingle plant of the new variety.

The new variety has been found to undergo asexual propagation at Wasco,Calif. and Cochranville, Pa. by a number of routes such as vegetativecuttings. Asexual propagation techniques in Wasco, Calif. andCochranville, Pa., such as vegetative cuttings, have shown that thecharacteristics of the new variety are homogeneous, stable, and strictlytransmissible by such asexual propagation from one generation toanother. Accordingly, the new variety undergoes asexual propagation in atrue-to-type manner.

SUMMARY OF THE INVENTION

It was found that the new variety of hybrid tea rose plant of thepresent invention possesses the following combination ofcharacteristics:

-   -   (a) abundantly and substantially continuously forms attractive,        cup-like reddish-purple colored blossoms,    -   (b) exhibits a very bushy and upright growth habit,    -   (c) forms vigorous vegetation, and    -   (d) forms attractive ornamental semi-glossy, dark green foliage.

The new variety well meets the needs of the horticultural industry. Itcan be grown to advantage as attractive ornamentation in parks, gardens,public areas, and residential landscapes. Accordingly, it isparticularly well suited for growing in the landscape.

The new variety can be readily distinguished from its ancestors. Morespecifically, the unnamed seeding seed parent displays a lower petalcount and decreased disease resistance compared to the new variety.Additionally, the unnamed seedling pollen parent originating from the(‘MACgenev’ x unnamed seedling) cross displays a lighter flower colorand a higher disease resistance compared to the new variety. Moreover,the new variety can be readily distinguished from non-parental relatedsimilar varieties. For example, ‘Meitafnah’ (U.S. Plant Pat. No. 24,873)displays less petals, a larger flower size, and a weaker purplish flowercolor compared to the new variety.

The new variety has been named the ‘KORcarmsis’ variety.

The first sale of the new variety was on Jul. 31, 2019 in Germany by theinventor or by another who obtained the new variety directly orindirectly from the inventor.

BRIEF DESCRIPTION OF THE PHOTOGRAPH

The accompanying photograph shows, as nearly true as it is reasonablypossible to make the same in a color illustration of this character, atypical specimen of the new variety and blossoms of the new variety. Theillustrated rose plant of the new variety was approximately two years ofage and was grown outdoors in a three-gallon container on its own rootsat Cochranville, Pa., U.S.A. in May 2020.

The drawing sheet illustrates a specimen of the plant displaying floralbuds and flowers at varying points of opening.

DETAILED BOTANICAL DESCRIPTION

The chart used in the identification of colors is that of The RoyalHorticultural Society (R.H.S. Colour Chart, 2015 edition). Theterminology which precedes reference to the chart has been added toindicate the corresponding color in more common terms. The descriptionis based on a two-year-old specimen of the new variety, observed duringMay, while growing on its own roots in a three-gallon container inCochranville, Pa.

-   Botanical classification: Rosa hybrida cultivar KORcarmsis.-   Plant:    -   -   Height.—Approximately up to 40.0 cm from the top of the soil            plane.        -   Width.—Approximately up to 40.0 cm.        -   Habit.—Very bushy and upright.-   Branches:    -   -   Stem color.—Old wood: commonly near Yellow-Green Group 146A            — young stems: commonly near Yellow-Green Group 144A.        -   Length.—Main stems: approximately 40.0 cm on average. —            secondary stems: approximately 16.0 cm on average.        -   Diameter.—Main stems: approximately 6.0 mm on average. —            secondary stems: approximately 3.0 mm on average.        -   Thorns.—Young thorns: length is approximately 5.0 mm on            average; width is approximately 3.0 mm at point of            attachment; color is commonly near Red-Purple Group 60C; and            amount is moderate, approximately 4 per internode. — old            thorns: length is approximately 5.0 mm on average; width is            approximately 3.0 mm at point of attachment; color is            commonly near Greyed-Orange Group 177B; and amount is            moderate.-   Leaflets:    -   -   Number.—3, 5, and 7.        -   Shape.—Ovate; apex shape is acute to acuminate; and base            shape is cuneate.        -   Margin.—Serrate.        -   Undulation.—Moderate.        -   Texture.—Upper surface: smooth. — under surface: smooth.        -   Venation.—Pattern: reticulate.        -   Size.—Terminal leaflet: length is approximately 5.5 cm on            average; width is approximately 3.0 cm on average. — lower            leaflets: length is approximately 3.5 cm on average; width            is approximately 1.8 cm on average. — 5-Leaflet leaf: length            is approximately 12.0 cm on average; width is approximately            9.5 cm on average.-   Foliage:    -   -   Young foliage.—Upper surface color: commonly near Green            Group NN137B blended with near Greyed-Red Group 178A towards            the margins with venation of commonly near Greyed-Purple            Group 183B. — under surface color: commonly near Greyed-Red            Group 178A with venation of commonly near Greyed-Red Group            182B.        -   Old foliage.—Upper surface color: commonly near Yellow-Green            Group 146A with venation of commonly near Yellow-Green Group            147B. — under surface color: commonly near Yellow-Green            Group 147B with venation of commonly near Yellow-Green Group            147C.        -   Petiole.—Texture: upper surface is smooth; under surface            glandular with some small prickles. — length: approximately            1.3 cm on average. — diameter: approximately 1.0 mm on            average. — upper and under surfaces color: commonly near            Green Group 138A.        -   Rachis.—Upper and under surfaces color: commonly near Green            Group 138A. — length: approximately 6.5 cm on average. —            diameter: approximately 1.0 mm on average.        -   Stipules.—Length: approximately 1.5 cm on average. — width:            approximately 5.0 mm on average. — margin: Entire to erose.            — upper and under surfaces color: commonly near Yellow-Green            Group 144A.-   Inflorescence:    -   -   Number of flowers.—About 6 blooms on average on a plant at            once.        -   Number of blossoms per stem or in a cluster.—Typically, 1            bloom per stem on average.        -   Blooming season.—Typically, in bloom from May to November in            Southeastern Pennsylvania.        -   Peduncle.—Color: commonly near Yellow-Green Group 144A. —            diameter: approximately 4.0 mm on average. — length:            approximately 4.0 cm on average. — surface texture: smooth.        -   Sepals.—Number: 7. — upper surface color and texture:            commonly near Yellow-Green Group 144B, covered in short            pubescence and some with a moderate amount of near            Greyed-Red Group182B towards the central portion of the            surface. — under surface color and texture: commonly near            Yellow-Green Group 144B; puberulent. — size: length is            approximately 2.5 cm on average; width is approximately 1.0            cm on average. — margin: entire. — apex: acute to aristate.            — base: truncate as it joins the receptacle.        -   Buds.—Shape: ovoid. — size: length is approximately 2.0 cm            on average; width is approximately 1.5 cm on average. —            color (when opening): commonly near Greyed-Purple Group            186C.        -   Flower.—Form: double, cuplike. — profile: convex. —            diameter: approximately 9.5 cm on average. — height:            approximately 4.0 cm on average. — duration: on the plant            approximately 10 days. — petal color when first and fully            opened: upper surface is commonly near Red-Purple Group N74B            with a small basal blotch near White Group 155A; under            surface commonly near Red-Purple Group N74C with a very            small basal blotch near White Group 155A.        -   Petaloids.—Upper surface color: commonly near Red-Purple            Group N74B with a small basal blotch near White Group 155A.            — under surface color: commonly near Red-Purple Group N74C.            — number: 25. — length: approximately 2.0 cm on average. —            width: approximately 1.5 cm on average.        -   Fragrance.—Very strong perfume scent.        -   Petal.—Number 65 on average. — drop: average. — length:            approximately 4.5 cm on average. — width: approximately 4.5            cm on average. — overall shape: broadly obovate. — margin:            entire with moderate undulation. — apex shape: rounded. —            base shape: Cuneate. — texture: both surfaces are smooth.        -   Stamen.—Number: approximately 80. — anthers: number is            approximately 80; color is commonly near Orange Group N25D;            length is approximately 2.0 mm; shape is oval. — filaments:            length is approximately 8.0 mm on average; color is commonly            near Yellow Group 3B.        -   Pistils.—Arrangement: separate and free. — number:            approximately 50. — style: length is approximately 5.0 mm;            color of upper half is commonly near Red Group N45C; color            of lower half is commonly near Greyed-Yellow Group 160D. —            stigma: color is commonly near Greyed-Yellow Group 162B;            diameter is less than 1.0 mm; shape is fan shaped.        -   Receptacle.—Size: 8.0 mm diameter. — depth: 1.0 cm. — shape:            urn shaped. — color: commonly near Yellow-Green Group 144A.            — surface texture: smooth.        -   Pollen.—None observed.        -   Hips/seed.—None observed.-   Development:    -   -   Vegetation.—Semi-glossy, dark green, vigorous and strong.        -   Blossoming.—Abundant and substantially continuous from            spring through frost.        -   Resistance to diseases.—Very good resistance for black spot            (Diplocarpon rosae) and powdery mildew (Sphaerotheca            pannosa).        -   Pest resistance/susceptibility.—Not observed to date.        -   Hardiness.—Hardy to USDA Zone 6b.

The new ‘KORcarmsis’ variety has not been observed under all possibleenvironmental conditions to date. Accordingly, it is possible that thephenotypic expression may vary somewhat with changes in light intensityand duration, cultural practices, and other environmental conditions.

I claim:
 1. A new and distinct variety of hybrid tea rose plantcharacterized by the following combination of characteristics: (a)abundantly and substantially continuously forms attractive, cup-likereddish-purple colored blossoms, (b) exhibits a very bushy and uprightgrowth habit, (c) forms vigorous vegetation, and (d) forms attractiveornamental semi-glossy, dark green foliage; substantially as hereinshown and described.